API Docs
There is no public API yet. This page describes what one would cover, so the link has somewhere honest to point until it exists.
Placeholder. No endpoints are live. Nothing on this page can be called — it is a statement of intent, not documentation. Replace it with real reference material when the API ships.
Not yet available
A read-only API over the same 2011 Primary Census Abstract data is planned, covering states, districts and towns with the indicators already published on the site. It has not been built, so there is no base URL, no key to request and no endpoint to call.
Getting the data today
The underlying source is public. The Primary Census Abstract workbooks are published by the Office of the Registrar General & Census Commissioner at censusindia.gov.in, and every figure on this site is derived from them — the Methodology sets out exactly how.